EP1363100B1 - Fusil à air comprimé - Google Patents

Fusil à air comprimé Download PDF

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Publication number
EP1363100B1
EP1363100B1 EP03010525A EP03010525A EP1363100B1 EP 1363100 B1 EP1363100 B1 EP 1363100B1 EP 03010525 A EP03010525 A EP 03010525A EP 03010525 A EP03010525 A EP 03010525A EP 1363100 B1 EP1363100 B1 EP 1363100B1
Authority
EP
European Patent Office
Prior art keywords
rifle
series
tank
holes
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03010525A
Other languages
German (de)
English (en)
Other versions
EP1363100A1 (fr
Inventor
Giancarlo Possamai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1363100A1 publication Critical patent/EP1363100A1/fr
Application granted granted Critical
Publication of EP1363100B1 publication Critical patent/EP1363100B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/62—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas with pressure supplied by a gas cartridge

Definitions

  • the present invention relates to a gas rifle as set forth in the preamble of claim 1.
  • US-A 4 770 153 which forms a basis for the preamble of claim 1, discloses such a pneumatic gun in which the mechanism comprises a pressure regulator having a hollow valve body which defines a low pressure chamber connected to a high pressure inlet and a low pressure outlet.
  • a shuttle having a valve stem flow passage moves away from its initial position causing said high pressure inlet to be blocked by the shuttle stem. This action stops the further flow of high pressure and provides the desired pressure in said low pressure chamber.
  • WO98/13660A a pneumatic drive unit is known which is similar to the above mentioned mechanism and which may be used in guns like a paint ball gun.
  • known weapons percussion shells which are constituted by a projectile inserted into a case containing the blasting charge and having a priming capsule on the bottom.
  • a percussion pin controlled by a trigger, strikes the priming capsule that starts the explosion of the blasting charge.
  • the gas generated by the explosion of the charge expands and launches the projectile along the barrel of the rifle.
  • One of the objects of the new rifle is to reduce the noise generated by each shot.
  • a further object is to eliminate the empty cases that are left after the various shots.
  • Another aim of the new rifle is to limit the quantity of compressed gas used.
  • Figure 1 shows a side view of the new rifle, wherein, for clarity's sake, the butt (F) is indicated by a broken line.
  • the new rifle comprises a compressed gas tank (S), a mechanism (M) for limiting the volume of compressed gas let out of the tank (S) and the introduction of said gas volume into the rifle barrel (C), as well as a connection (R) joining said mechanism (M) to the rifle barrel (C).
  • S compressed gas tank
  • M mechanism for limiting the volume of compressed gas let out of the tank
  • C rifle barrel
  • R connection
  • the mechanism (M) is connected to the rifle trigger (G) directly or through levers (L).
  • the compressed gas tank (S) is constituted by a small cylinder full of pressurized gas, preferably carbon dioxide.
  • This tank (S) is equipped with an automatic valve in correspondence with its coupling, said valve being suitable for preventing any gas leakage. Said valve can be opened only by pushing it towards the inside of the tank (S).
  • the compressed gas tank (S) is connected or applied directly to the mechanism (M), which, in its turn, is joined to the barrel (C) of the rifle by means of the connection (R).
  • Figure 2 shows a cross section of the mechanism (M)
  • Figures 3a, 3b, 3c, 3d show the various operating phases of the mechanism (M) in sequence.
  • the mechanism (M) mainly comprises an internal cylinder (M1), on which an external cylinder (M2) slides, having a rod (M3) and a drilled wall (M4) on its inside.
  • the internal cylinder (M1) comprises a tube having two series of radial holes (M1a, M1b) in its wall.
  • the external cylinder (M2) comprises a tube suitable for sliding on the outer surface of the internal cylinder (M1).
  • the inner surface of said external cylinder (M2) is provided with an annular chamber (M2a) with a width in the same order of the width of each hole in the series of holes (M1a) and (M1b) of the internal cylinder (M1). Substantially, the chamber (M2a) communicates only with one series of holes (M1a) and (M1b) of the internal cylinder (M1), never with both at the same time.
  • Suitable gaskets ensure the required tightness between the external cylinder (M2) and the internal cylinder (M1).
  • the drilled wall (M4) is constituted by a circular, tight wall having on its circular surface a through hole (M4a) suitable for housing the rod (M3) with precision.
  • Said drilled wall (M4) is fixed inside the internal cylinder (M1) between the two series of holes (M1a) and (M1b) of the internal cylinder (M1).
  • the rod (M3) is coaxial with the internal cylinder (M1) and passes through the hole (M4a) of the drilled wall (M4).
  • Said rod (M3) extends from the coupling of the gas tank (S) to the outside of the mechanism (M) and comes out of the connection (R).
  • the end of the rod (M3) is threaded and screwed onto the connection (R) and is equipped with a knob (Z), so that the rod can be moved coaxially within the internal cylinder (M1).
  • Suitable gaskets (OR) positioned on the rod (M3) ensure the required tightness in correspondence with the drilled wall (M4).
  • the mechanism (M) constituted as described above is applied between the compressed gas tank (S) and the connection (R), the latter being joined to the projectile store (P) and the rifle barrel (C), together with an elastic element (E), typically a spring, suitable for pushing the external cylinder (M2) towards the compressed gas tank (S).
  • an elastic element (E) typically a spring
  • the rod (M3) is in safety position and in this position it is also possible to change the tank (S).
  • the rotation of the knob (Z) makes the rod (M3) advance and its end opposite the knob reaches and opens the valve of the tank (S), thus allowing the gas to reach the inside of the mechanism (M), while the gaskets (OR) fit in the hole in the wall (M4) (Fig. 3b).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Claims (4)

  1. Fusil à gaz avec un réservoir à gaz comprimé (S), comprenant un mécanism (M) pour limiter le volume de gaz sortant du réservoir (S) et pour introduire le volume limité de gaz dans le canon (C) du fusil, ledit mécanism étant actionné par la détente (G) du fusil, caractérisé par le fait que ledit mécanism (M) comprend un cylindre intérieur (M1) avec deux rangées de trous radiaux (M1a) et (M1b), un cylindre extérieur (M2) déplaçable sur le cylindre intérieur (M1) et muni dans sa face interne d'une chambre annulaire (M2a), une tige (M3) ainsi q'une paroi percée (M4) montée dans le cylindre intérieur (M1) et positionnée entre les deux rangées de trous (M1a) et (M1b), ladite tige (M3) passant à travers le percage (M4a) de ladite paroi percée (M4) et étant apte à être poussée vers l'avant pour ouvrir une soupape du réservoir (S).
  2. Fusil à gaz selon la revendication 1, caractérisé par le fait que la largeur de la chambre annulaire (M2a) située dans la face interne du cylindre extérieur (M2) est plus courte que la distance entre les deux rangées de trous (M1a, M1b) de façon à ce que la cambre annulaire (M2a) ne soit en communication qu'avec l'une ou l'autre des deux rangées de trous (M1a, M1b).
  3. Fusil à gaz selon la revendication 1 ou 2, caractérisé par le fait qu'un élément élastique (E) pousse le cylindre extérieur (M2) vers le réservoir de gaz (C) de façon à ce que, dans une phase initiale, la chambre annulaire (M2a) dudit cylindre extérieur (M2) se trouve dans la zone de la permière rangée de trous (M1a) du cylindre intérieur (M1) qui est plus proche du réservoir (S).
  4. Fusil à gaz selon une quelconque des revendications précédentes, caractérisé par le fait que la détente (G) du fusil commande le déplacement du cylindre extérieur (M2) de telle manière que la chambre annulaire (M2a) du cylindre extérieur (M2) soit avancée de sa position communicant avec la première rangée de trous (M1a) du cylindre intérieur (M1) vers une position communicant avec la deuxième rangée de trous (M1b), laquelle position est plus éloignée du réservoir (S) et établit une communication avec le canon (C) du fusil.
EP03010525A 2002-05-16 2003-05-10 Fusil à air comprimé Expired - Lifetime EP1363100B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD20020126 2002-05-16
IT2002PD000126A ITPD20020126A1 (it) 2002-05-16 2002-05-16 Carabina a gas compresso

Publications (2)

Publication Number Publication Date
EP1363100A1 EP1363100A1 (fr) 2003-11-19
EP1363100B1 true EP1363100B1 (fr) 2006-02-22

Family

ID=29267079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03010525A Expired - Lifetime EP1363100B1 (fr) 2002-05-16 2003-05-10 Fusil à air comprimé

Country Status (5)

Country Link
EP (1) EP1363100B1 (fr)
AT (1) ATE318402T1 (fr)
DE (1) DE60303625D1 (fr)
ES (1) ES2259120T3 (fr)
IT (1) ITPD20020126A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770153A (en) * 1984-09-20 1988-09-13 Edelman Alexander S Pneumatic weapon with pressure reduction valves
AUPO257196A0 (en) * 1996-09-25 1996-10-17 Viviani, Rudy Pneumatic drive unit

Also Published As

Publication number Publication date
ES2259120T3 (es) 2006-09-16
ITPD20020126A1 (it) 2003-11-17
ATE318402T1 (de) 2006-03-15
EP1363100A1 (fr) 2003-11-19
DE60303625D1 (de) 2006-04-27

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